40136236 has 12 divisors (see below), whose sum is σ = 80272528. Its totient is φ = 17201232.

The previous prime is 40136233. The next prime is 40136251. The reversal of 40136236 is 63263104.

40136236 is an admirable number.

It is a super-2 number, since 2×40136236² = 3221834880495392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40136236.

It is not an unprimeable number, because it can be changed into a prime (40136233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716691 + ... + 716746.

Almost surely, 2^40136236 is an apocalyptic number.

It is an amenable number.

40136236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40136236 is a wasteful number, since it uses less digits than its factorization.

40136236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433448 (or 1433446 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 40136236 is about 6335.3165666760. The cubic root of 40136236 is about 342.3830165063.

The spelling of 40136236 in words is "forty million, one hundred thirty-six thousand, two hundred thirty-six".